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@ibyar/elements

v2.5.0

Published

Ibyar elements, hold info about HTMLElements class, attributes and tag name

Downloads

320

Readme

Ibyar Elements

NPM Version NPM Downloads LICENSE lerna GitHub contributors

Ibyar elements, hold info about HTMLElements class, attributes and tag name.

Install

npm i --save @ibyar/elements
yarn add @ibyar/elements

Try the parser

  • Ibyar Elements parser: https://ibyar.github.io/astexplorer/

Example

import { hasNativeAttr } from '@ibyar/elements';

const div = document.createElement('div');
console.log(hasNativeAttr(div, 'for'));
import { htmlParser } from '@ibyar/elements';

const template = `<div #div name="data-div" (click)="onDivClick($event)">
    				<person-view [name]="alex" age="35" @edit="onPersonViewClick($event)" />
				  </div>`;
const htmlNode = htmlParser.toDomRootNode(template)(template)
console.log(htmlNode);

By default the parser has no registered info about structural/attributes directive.

You need to register them with inputs and outputs.

import { directiveRegistry } from '@ibyar/elements';


/**
 * register a structural directive, with name '*notifier' , the name must start with '*'.
 * with inputs `message` and `color`,
 * and output `action`.
 */ 
directiveRegistry.register('*notifier', {
	inputs: ['message', 'color'],
	outputs: ['action'],
});

/**
 *  register an attributes directive with name 'appConfirm'
 */
directiveRegistry.register('appConfirm', {
	inputs: [],
	outputs: [],
});

note:

the attributes directive has higher priority than regular element attributes, so if you registered an attributes directive with a name like 'style', 'class', 'id', 'name', etc... it will interpreted as an attributes directive and will be remove from the element attributes list.

import { directiveRegistry } from '@ibyar/elements';


/**
 * register an attributes directive with no input and no output.
 */
directiveRegistry.register('style');

supported syntax for directives

<!-- short hand -->
<div *for="let user of users"></div>
<div *if="user.name == 'ali'"></div>

<!-- full description -->
<div *for let-user [of]="users"></div>
<div *if [if]="user.name == 'ali'"></div>

<!-- tag name as directive -->
<for let-user [of]="user">....</for>
<if [if]="user.name == 'ali'">....</if>

<!-- control flow syntax -->

@if (a > b) {
  <p>{{a}} is greater than {{b}}</p>
}

@if (a > b) {
  {{a}} is greater than {{b}}
} @else if (b > a) {
  {{a}} is less than {{b}}
} @else {
  {{a}} is equal to {{b}}
}

@for (item of items; track item.id) {
  {{ item.name }}
}

@for (item of items; track item.name) {
  <li> {{ item.name }}</li>
} @empty {
  <li aria-hidden="true"> There are no items. </li>
}


@switch (userPermissions) {
  @case ('admin') {
    <app-admin-dashboard />
  }
  @case ('reviewer') {
    <app-reviewer-dashboard />
  }
  @case ('editor') {
    <app-editor-dashboard />
  }
  @default {
    <app-viewer-dashboard />
  }
}


<!-- Local template variables -->
		
@let name = user.name;
@let name = user.name, age = user.age; <!-- comma separated variable declaration -->
@let greeting = 'Hello, ' + name;
@let data = data$ | async;
@let pi = 3.1459;
@let coordinates = {x: 50, y: 100};
@let longExpression = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit ' +
                      'sed do eiusmod tempor incididunt ut labore et dolore magna ' +
                      'Ut enim ad minim veniam...';